Apparatus for making nuts



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IN V EN TOR.

BY HENRY .iA/0'@ a5 Arran/.sns

oct. 31, 1944.`

' H. J. HoGuE APPARATUS FOR MAKING NUTS Fired July 1o. 1942 ssheets-snee; 2

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IN V EN TOR.

Y H12-NPY .f H0605 Oct. 3l, 1944. H, J, HOGUE' 2,361,546

' ABPARATUS FOR MAKING NUTS l vFiled .my 1o, 1942 ls sheets-sheet sINVENroR.

/wer J' H0605 Arme/vers Patented Oct. 31, 1944 2,361,546 APPARATUS FOR.MAKING NUTS HenryJ. Hogue, Lakewood, Ohio, assigner of onethird to JohnC.

Charles L. Wasmer, and one-third to Wasmer, both of Lakewood,

Ohio

Application July 1942, Serial No. 450,361 1 Claim. (Cl. 1-0-76) Thisinvention relates to the production of nuts or similar articles by coldworking,.and more particularly to an improved nut making machine of thetype in which round stock is subjected to a flattening operation priorto the piercing and severing of the nut blanks.

An object of my invention is to provide a nut machine of this typehaving novel means for performing the stock flattening operation.

Another object of the invention is to provide an improved nut machine ofthis character in which the stock flattening means is of a simple butrugged construction and includes a reciprocable slide which is operatedsimultaneously with the main slide and from the same power shaft.

The invention may be further briefly summarized as consisting in certainnovel combinations and arrangements of parts hereinafter described andparticularly set out in the appended claim.

In the accompanying sheets of drawings,

Fig. 1 is a plan view of ing my novel stock flattening means;

Fig. 2 is an end view of the machine;

Fig. 3 is a longitudinal sectional elevation taken through the stockflattening means,'as indicated by line 3 3 of Fig. 1;

Fig. 4 is a partial longitudinal sectional view taken on line 4 4 ofFig. 2;

Fig. 5 is a-sectional view similar to Fig. 4 but sghowing the operatingparts in a different posiion;

Fig. 6 is an elevational view looking toward the piercing and trimmingdies of the nut machine,

as indicated by line 6 6 of Fig. 4;

Fig. 7 is a plan view, with portions broken away, showing the stockflattening dies;

Fig. 8 is an end elevation of one of the flattening dies Viewed asindicated by line 8 8 of Fig. '7; Figs. 9 and l0 are fragmentary viewstaken, respectively, as indicated by lines 9 9 and I0 I0 of Fig. 1 andshowing the stock entering and leaving the flattening means;

Fig. 11 is an elevational view showing the stock As I have alreadyindicated in a general way,

v my improved nut machine is of the type in which rod stock or'wire S issubjected Y to a flattening operation prior to 'its being fed to the nutforming a nut machine embodydies. The rod stock may be round stock, asshown in Figs. 11 and 12, which is flattened progressively while thestock is being advanced, as indicated by the tapered section S1. Theflattened stock S2 is fed to the dies ofthe nut machine where the holesor tap openings I n are punched and the nut blanks II aresevered fromthe stock in succession.

As shown in the drawings, my improved nut machine comprises in general amain frame I2 having a 4guideway I3a in which the reciprocatingmainslide .I3 operates. The slide I3 may be reciprocated by means of togglelinkage III connecting the slide with a crankshaft I5 which extendstransversely of the frame I2. Instead of the toggle linkage I4 the mainslide can, of course, be reciprocated by any other suitable means suchas the cam means shown in 'my earlier Patent No. 2,046,075, granted June30, 1936.

The nvt forming dies used in my vmachine may be similar to thoseheretofore used in n-ut machines of this type and may comprise punchesI6 and Il carried by the main slide I3 and piercing andltrimming dies I8and I9 carried by the stat'onary die block 20 and with which the punchesI6 and I'l cooperate respectively. `The nut forming dies may alsoinclude a chamfering die 2| and a finishing die 22 carried by areciprocating head 23. The reciprocating head 23 is lowered and raisedin timed relation to the operation of /the slide I3 by movementtransmitted from the crankshaft I5 through the links 24 and 25 and therock shaft 26. As is customary in nut machines of this type, thereciprocating head 23 alternately shifts the chamfering and finishing idies 2| and 22 into position for cooperation with the -punch I1 carriedby the The means foi"y flattening to the feeding of the same nut machineconstitutes an main slide |3. y the stock S prior to the diesof the.important feature of my invention. This flattening means is of a ladjacent the main simple but vrugged construction enabling it to rendercontinuous service without breakdown or failure which is highlydesirable in present day nut machines. This flattening means vmay beconstructed as a separate device or attachment to be applied to anexisting nut machine, but preferably is constructed or yembodied in thenut machine as an integral part thereof. The flattening means comprisesan auxiliary frame 28 having a guideway 28 in which a reciprocable slide30 operates. The frame 28 is .arranged frame I2 so ,that'the guide- Way29 extends substantially parallel with the guideway I3a in winch themain slide' I3 operates.'

-slide 30.

ythe attened portion of and 33.

. push 2 The frame 28 may be formed as a separate frame portion ormember which may be connected with the main frame I2 by means of acommon base 21 or, if desired, may be formed as an integral part of themain frame. an extension thereof, extends transversely of the frame 28and is connected with the slide 3 0 to actuate the latter by means ofthe toggle linkage 3I.

The flattening di'es may comprise an anvil or stationary die 32 and amovable die 33 cooperating therewith and carried by the-reciprocable Asshown in Figs. 7 and 8, the flattening dies 32 and 33 have complementalgrooves 34 therein which extend across the opposed faces of the dies andin which the stock S is subjected to pressure for flattening and shapingthe same. The grooves 34 are tapered-in depth and width along thesection 34a thereof which progressively changes the stock S from roundto flat shape by forming on the stock the intermediate tapered sectionsS1. The grooves 34 also include a seotion 34h of substantially uniformdepth and width by which the conversion of the tapered shape S1 of thestock to the fiat shapeAS is, completed.

The flattened stock S2 is fed to the dies of the nut machine by means ofa pair of intermittently operated feed rolls 35 and 36 which operate onthe stock and also serve to pull the stock through the fiattening. dies32 'I'he feed rolls 35 and 36 are operated intermittently so as toadvance the stock when the flattening and nut forming dies are in theiropen or retracted position. The feed rolls may be driven from the mainshaft I by means of a rod 31 having a pawl 38 which cooperates with aratchet wheel 39 mountedon the shaft of the feed roll 36.

In" the operation of my improved apparatus The crankshaft I5, orl

the stock S moves intermittently between the attening dies 32 and 33where it is subjected to the intermittent action of these dies and ischanged from -round to flat shape. The at stock S2 is fed into a grooveof a stripper plate 40 which locates the stock in front of the piercingand trimming dies I8 and I9. On each forward movement of themain slideI3 the punches I6 and I1 pierce the stock and cut o one of the nutblanks II. The severed nut blank II is carried forward on the pilot I1a.of the punch I1 and is forced through the die I9 which cooperates withthe punch I1 in the cut-off operation and also trims the severed blankto the approximate shape and size desired.

At the time that the nut blank is severed from the stock, the chamfermgdie 2| is in'alignment with the die I9, as shown in Fig. 5, and thesevered nut blank while being carried on the pilot I1a is forced againstthe charnfering die by the advancing punch I1. Immediately following theohamfering operation the punch I1 is partially retracted to disengagethe blank II from the chamfering head 23 is lifted to bring thefinishing die 22 into alignment with the punchv I1, as shown in Fig. 4.The punch I1 thencontinues its forward movement and forces the blank IIthrough the finishing die 22 from which it is delivered to a suitablecontainer by the chute 4I. The return stroke of the slide I3 retractsthe punches I6 and I1 to permit the stock to be fed forward for the nextsucceeding piercing andsevering operation.

From theforegoing description andthe accompanying drawings, it will nowbe readily seen that I have provided a nut machine having novel stockflattening means which is of a very rugged and durable construction andwhich is actuated in ltimed relation with the dies of the nut machineand from the same power shaft. It will be seen, furthermore, that theuse of toggle linkage in actuating the fiattening dies affords a verypowerful and effective flattening action without incurring the bendingand distortion of the various parts, which has caused frequent breakdownin attening devices or attachments heretofore used with nut machines.

While I have illustrated and described my im- .proved nut makingapparatus in more or less detail, it will be understood, of course, thatI do not wish to be limited to the particular apparatus and detailsherein disclosed, but regard my invention as including such changes andmodifications as do not constitute a. departure from the spirit of theinvention and the scope of the appended claim.

Having thus described my invention, I claim:

In nut making apparatus, a main frame, a reciprocating mechanism ln saidmain frame for' piercing and severing nut blanks, -a power shaftrotatable in said main frame for actuating said reciprocating mechanismand having a lateral extension projecting beyond said main frame, anauxiliary frame contiguous to said main frame, a slide reciprocable insaid auxiliary frame, cooperating attening dies carried by said slideand auxiliary frame, cooperating feed rolls between said main andauxiliary frames and operable to intermittently feed stock to beflattened to said attenng dies and to advance the flattened stock tosaid reciprocating mechanism` means for driving said feed rolls fromsaid power shaft in timed relation thereto, said auxiliary frame havingspaced side members with guide means thereon for guiding the stockacross-the auxiliary frame and between said flattening dies andtogglelinkage connected with the extensioi of said power shaft for actuatingsaid slide i1 timed relation to said reciprocating mechanisn and feedrolls.

. HENRY J. HOGUE.

die 2l, and at this time the

